Artic Cooling F12 question, PWM vs non

[kuhla]

Dumb mistake, I just bought some AC F12 fans when I had originally intended to buy AC F12 PWM fans. Considering I plan to just plug them straight into the PSU I'm reconsidering whether to send them back or not.

F12 - http://www.arctic.ac/en/p/cooling/case-fans/77/arctic-f.html

F12 PWM - http://www.arctic.ac/en/p/cooling/case-fans/73/arctic-f-pwm.html

I cannot find any technical differences other than the cable on the non-PWM models. Anyone know of any others? Thoughts? Opinions? Other fan stories of non-PWM vs PWM models?

[Dk_vr]

There are no other differences except the 4th cable and the PWM option.

In fact there are 3 almost same F12 models.
F12 - Voltage controll et 7, 9 and 12V
F12PWM - More precise control made by the motherboard
F12TC - Thermal Probe fan control

Basically its the same model with different control method. ;)